You should try it sometime.. it might alter your perception. Disaster has a scene that blends physical sets, live actors, and projection in a realistic way.
If you want to focus on spiderman... it's even worse for your AAs are always #1 position. The speed and dexterity required to show spiderman being.. you know.. spiderman.. just isn't practical with AAs. If you want to stage type of scene.. it would look pathetic with AAs. You have to use the technology that fits your application.. not constrain yourself to one tech and say that's all we can ever do.
AAs still struggle to be convincing as humans up close. They work best by staging them in almost static scenes with distance between the guest and set. The limitations of the tech drive the staging of the attraction.
Indy is a great example... they put really convincing Indy AA figures in what is otherwise a very high speed, intense attraction.. but they had to put him in scenes where he is basically motionless except his head.
Use the tools that fit the need best. Do not hold onto these extreme 'one is always better than the other' attitudes. Because you're missing that when the right tool is used for the right job.. the effect is going to be the best.